Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/03/2024, 06:11

General

  • Target

    2024-03-10_97a7ac797299eb5901180bd3d81d5320_cryptolocker.exe

  • Size

    127KB

  • MD5

    97a7ac797299eb5901180bd3d81d5320

  • SHA1

    9648d1761937e3a225bc0ffde8b36d673ae96c23

  • SHA256

    011019323f76a12aba0f0fdd24069764c784a87efb6482f9d00c880f6a2ba1ad

  • SHA512

    4a1aa0ab88ac0bb6ec0eb9ee743da5f50d9bbbdde5d72fcec560e841a347e584439a6d9218062f8cb8ec76da4cf2e53c1aebe9c8e65bd43a300bf90f07ea147f

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eIu:AnBdOOtEvwDpj6zH

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-10_97a7ac797299eb5901180bd3d81d5320_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-10_97a7ac797299eb5901180bd3d81d5320_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2280
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2076

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\asih.exe

          Filesize

          127KB

          MD5

          7f64f8fef9e135607cb4b1b261ab1758

          SHA1

          3176ca74c86364b918db6966a8bc2800679755dd

          SHA256

          9a5b13433e74f6a7f889b3090a837e5bc3b8b82160f6d2bb3e0bec23eeb96659

          SHA512

          30a49c19ce3353eb6dadd1974c391b1549b144044400e1bbcdb7cc0b1fb8581c8a33baec41018953da744656f1c8f330b39c07f058aa29287c2fe2a7cba1f1dc

        • memory/2076-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2076-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2076-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2076-27-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2280-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2280-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/2280-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/2280-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/2280-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB